Author: DONIE O'SULLIVAN, CNN

DNC raises concerns about Facebook's ability to catch trolls

The Democratic National Committee wrote to Facebook COO Sheryl Sandberg before Thanksgiving to raise concerns about the company's ability to catch online trolls and to change its political ad policy, according to a copy of the letter obtained by CNN.

Pressure mounts on Facebook amid political ad controversy

Facebook executives are facing mounting pressure, including from inside the company, to make sweeping changes to how the social media site runs political ads -- including reversing a controversial policy that allows politicians to run false ads and how voters are targeted on the platform.

False ad on Republicans tests Facebook's policy on lies

A left-leaning PAC ran a Facebook ad falsely claiming that Republican Sen. Lindsey Graham endorsed the Green New Deal. The ad came after Rep. Alexandria Ocasio-Cortez grilled Facebook CEO Mark Zuckerberg earlier this week about the company's policy of allowing politicians to run ads on the platform that are false.

Twitter tells Kamala Harris Trump stays

Twitter told Sen. Kamala Harris that it would not suspend President Donald Trump's account despite her urging the company to do so, according to a copy of a letter the company sent to the Harris presidential campaign.

Twitter suspends account hours after Trump retweeted it

In a move that will likely embolden President Donald Trump's claims that social media companies are biased against him and his supporters, Twitter suspended an account Tuesday evening that the President had retweeted just hours earlier.

Tulsi Gabbard, the most searched candidate during debate, sues Google

Rep. Tulsi Gabbard's presidential campaign sued Google on Thursday after the company suspended the candidate's Google Ads account following last month's Democratic presidential debate. The campaign alleges the corporation "used its control over online political speech to silence" the candidate.

Sen. Schumer calls for feds to investigate FaceApp

Senate Minority Leader Chuck Schumer is calling on the FBI and Federal Trade Commission to investigate the popular smartphone application FaceApp, citing privacy concerns and fears the data could be shared with the Russian government.

Russian accounts pushed fake Rubio tweet

A network of suspected Russian accounts promoted a fake tweet purportedly sent by Sen. Marco Rubio claiming that a purported British spy agency planned to derail the campaigns of Republican candidates in last November's midterm elections, research from the think tank Atlantic Council shows. The false claim was later repeated by RT, the Russian state-backed media network.

Doctored Pelosi video shared across social media

A manipulated video being shared by some social media users to spread a false claim that House Speaker Nancy Pelosi slurred her words after meeting with President Donald Trump on Wednesday has been removed by YouTube, the company told CNN on Thursday.

Beto O'Rourke has spent $5 million on Facebook ads

Rep. Beto O'Rourke has spent more on Facebook ads than any other candidate this campaign cycle, new data released by the social media company Tuesday shows. The Texas Democrat's campaign has spent $5.3 million since May.

Hackers accessed personal information of 30M Facebook users

Almost 30 million Facebook users' phone numbers and email addresses were accessed by hackers in the biggest security breach in the company's history, Facebook said Friday. The attackers accessed even more details on 14 million of those users, including the area where they live, their relationship status, their religion, and part of their search history.